Why are you measuring under Windows to see what will happen on Unix?If you've only got one machine to play with, why not boot off a LiveCD (like Knoppix) and measure your code (or a key subset) under Linux?Might not be the same OS your ISP is using, but closer to Unix than Windows?Might make absolutely no difference, but at least you might be a bit closer to comparing apples to apples rather than apples (Unix) to oranges (Windows) ...